Attachment for metal-planers.



No. 725,805. PATENTED APR.21,190 3. L. E. WARD.

ATTACHMENT FOR-METAL PLANERS.

APPLICATION FILED JAN. 175, 1903.

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PATENTBD APR, 21, 1903.

L. E. WARD.

ATTACHMENT FDR METAL PLANERS.

APPLICATION FILED JAN. 15, 1903.

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No. 725,805. PATENTED APR, 21, 1903.

L. E. WARD. ATTACHMENT FOB. METAL PLANERS.

AP PLIOATION FILED JAN. 15, 1903.

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- whereby articles having an irregular or vary-' UNITED STATES PATENT OFFICE.

LAWRENCE E. WARD, OF ALLEGHENY, PENNSYLVANIA.

ATTACHMENT FOR METAL-PLANERS.

SPECIFICATION forming part of Letters Patent No. 725,805, dated April 21, 1903.

I Application filed January 16, 1903. Serial No. 139,182. (No model.)

To all whom it may concern: 7

Be it known that I, LAWRENCE E. WARD, a resident of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Attachments for Metal-Planers; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to, attachments for metal-working machines, and more especially to attachments for metal-planers.

The object of my invention is to provide an attachment for machines of this character ing face can be quickly machined.

My invention is particularly designed for machining or planing the faces of locomotiveboxes, which, as is well known, have two oppositely-arranged faces of irregular outlines, the central portions of said faces being parallel, while the ends diverge outwardly or away from each other. This practically gives six separate and independent faces which must be machined off. Heretofore this work has been done by machining each face sepa rately, thus necessitating the unclamping of the work from the planer-bed and reclampw ing the same between the finishing of one face and the beginning of another face. As a consequence this work has consumed 1. great deal of time and has been very expensive.

The object of my invention is to provide an attachment for metalplaners whereby metal articles having irregular faces, such as locomotive-boxes, can be more quickly and expeditiously machined.

To this end my invention consists, generally stated, in providing a tool-holder having therein two oppositely-facing tools, so that the two opposite faces of the box can be simultaneously machined. In connection with such a tool I provide-a bar of suitable profile and attach the same to the plan er-bed to move therewith and which profile bar will move the tools. laterally inward and outward, so as to conform to the taper faces of the locomotivebox or other article being machined.

il Iy invention also consists in certain details of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a perspective viewof a planer, showing my attachment applied thereto. Fig. 2 is a plan view of the bed of the planer with my attachment applied thereto. Fig. 3.is a plan view of the profile bar. Fig. 4 is a cross-section of the same. Fig. 5 is a front view of the tool-holder and tools. Fig. 6 is a side view thereof. Fig. 7 is a side view of one of the tools.. Fig. Sis a front view of a modified tool-holder with the tools therein, and Fig. 9 is aside view thereof.

The planing-machine shown in Fig. 1 comprises the usual frame or housing 1, the uprights 2, cross-head 3, tool-post 4, bed 5, and reversing mechanism, such as the belt-pulleys ordinarily used for driving the bed alternately in opposite directions. All of these parts may be of the usual or any preferred construction, and the particular forms shown in the drawings have been selected for purposes of illustration merely.

In carrying out my invention I apply to the tool-post my improved tool (shown in Figs. 5 and 6) and attach to the bed the profile bar referred to. The tool comprises a holder-7, having a shank 8 for attachment to the toolpost, and provided at its lower end with an enlargement having therein the transverse opening 9 for receiving the tools 10. The latter are of the form shown in Fig. 7, having thecutting portion 11 and shank 12 extending practically at right angles to the cutter 11. The shanks 12 are of the'same shape in cross-section as the opening 9 in the toolholder, both preferably being rectangular, as shown. The lower edge of the tool-holder is provided with a large notch or gap 13, which intersects the transverse opening 9 and forms a space in which the profile bar hereinafter described is situated. The shanks 12 of the tools 10 are of such length that when said shanks are placed in the opening 9 and forced as far inwardly or toward each other as possible they will project a slight distance into the notch or opening 13. Suitable means will be provided for retracting said tools and holding them in their innermost positions. These means may be of various constructions and are illustrated in the drawings by fiat leaf-springs 15, attached to the tool-holder by means of screws 16 and bearing against shoulders 17 on the outer ends of the tools. These springs will always keep the tools retracted or as close together as possible,but will permit the same .to be shoved outwardly by the projecting portions of the profile bar. This profile bar is shown in plan view in Fig. 3 and is provided with alternate wide and narrow portions, and it will be attached to the planer-bed, so as to move therewith, and will be held in such position that it will lie in the notch 13 of the tool-holder and bear against the inner ends of the shanks 12 of the tools. As it travels along with the planer-bed the enlarged portions thereof will push the tools outwardly against the tension of the springs 15, while these springs will again move the tools inwardly when the narrower portions of the profile bar come opposite the shanks of said tools. This profile bar will be attached to the planer-bed, so as to move therewith, and preferably this attachment will be such as to permit the bar to move freely in a vertical direction. As a suitable attaching means for this purpose I provide a pair of standards 20, secured to the planerbed and which are provided on their facing edges with undercut vertical grooves 21, and the profile bar is provided at each end with an enlarged head 22, which fits in the undercut grooves 21, so that said bar can move freely up and down. This connection not only permits the bar to be readily removed and replaced, but also permits an unobstructed downward feed of the toolhead without disturbing the contact of the tools with the profile bar. The particular profile bar shown in the drawings is designed for planing the faces of a locomotive-box, such as shown in Fig. 2. This box, it will be observed, has the parallel faces 2% near its center, while at each end thereof are the diverging faces 25. The particular profile bar shown will properlyguide the tools for planing the faces of two such boxes placed end to end and clamped to the planer-bed. In this operation the tool described is clamped in the tool-post, while the boxes, together with the profile bar, are secured to and moved with the bed. We will suppose that the bed and bar are traveling in the direction of the arrow shown in Fig. 3. The tools will be held at their greatest distance apart by the wide portion 26 of the bar; but as the tapering portion 27 of said bar comes opposite the tools the latter will be gradually forced inward or closer toward each other by the combined action of the springs and the pressure of the tools against the work. During this inward movement the tools will be operating upon the converging faces at one end of the box. When the tools come opposite the straight or parallel faces 24, they will be moved inwardly to such an extent as to clear these faces, as these faces will have been previously planed out by the tools shown in Fig. 8. To permit this clearance of the faces 24, the profile bar is provided with the restricted concave portion 28, which permits the tools to approach the limit of their inward movement. When the tapering portion 28 of the bar comes opposite the tools, they are again forced outwardly gradually, and during this movement they will operate upon the converging faces 25 of the box. The straight portion 30 of the bar corresponds to the space between two adjacent boxes and serves merely to hold the tools at their greatest position outwardly. This is succeeded by a converging tapering portion 31, which corresponds to the portion 27 heretofore described, and the remainder of the bar is an exact repetition of the parts alreadydescribed. The profile bar may be a flat bar having its two edges formed to the proper configuration, but preferably'for convenience in making the samel turn it out of a round bar and then flatten off the lower side thereof, as shown in Fig. 4. By properly shaping the sides of the bar various other articles than locomotive-boxes may he finished by my attachment. The parallel faces 24 of the box will preferably be machined or finished before the diverging faces 25, and for this purpose the tool above described may be employed by merely using a straight-edged profile bar. If the cut is heavy, I prefer to use a slightlymodified tool, as shown in. Fig. 8, in which the lower end of the tool-holder is not provided with the notch or gap 18, and the shanks of the tools will be of such length that when placed in the opening 9 their ends will come in contact'in order to hold them firmly in place. They are secured in the holder by any suitable means-such, for instance, as the set-screws 33. The shanks of these tools preferably are provided with semiconical depressions 34 at their ends, and a hole. 35 will be made in-the sides of the holder, through which a taper pin can be driven when it is desired to remove the tools from the holder in order to loosen the former should they be wedged in tight.

In finishing locomotive-boxes according to my attachment a number of boxes will be clamped in line on the bed, and the straight or parallel faces 24 will preferably be finished first by means of the tools and toolholder shown in Fig. 8. Then the standards 20 and profile bar are secured to the bed and a tool-holder and tools, such as shown in Figs. 5 and 6, are secured in the tool-post. The profile bar will be of sufficient length and have as many repetitions of the profile face thereon as there are boxes on the bed. Then as the bed moves along the profile bar will alternately move the tools outwardly to finish the diverging faces of the boxes, while the narrower portions of the bar will permit the tools to move inwardly under the com.- bined action of the springs 15 and pressure of the work to finish the converging faces of the boxes, while the narrowest concave portions 28 of the bar will permit the tools to move so far inwardly as to clear the previ- ICO ously-fiuished parallel faces 2a of the box. These narrow portions may be straight, so that the tools will also finish the faces 24, thus dispensing with the prior finishing thereof.

While I have shown my invention applied to a metal-planer havinga bed reciprocating in a straight line, it is not necessarily limited thereto, as it can be applied to any metalworking machine having a tool-post and a bed movable relatively to each other either on straight lines or curvilinear lines, as desired. In the latter case, however, the profile bar would have to be curved in an arc corresponding to the arc in which the bed or tool-post moves.

By means of my invention articles, such as locomotive-boxes or the like, having irregular faces can be finished practically at a single operation, it not being necessary to unclamp the work from the bed of the machine after it is once put in place. At the same time the double tools shown will finish both faces simultaneously. As a consequence the work can be done very much more quickly and v cheaply than under the old methods.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a metal-working machine, the combination with a bed and tool-post, mechanism for moving the same relatively to each other, a tool-holder secured in the tool-post, a tool mounted in the holder and movable laterally therein, and a profile bar connected to the bed and bearing against the tool in the holder.

2. In a metal-working machine, the combination with a bed and tool-post, mechanism for moving the same relatively to each other, a tool-holder in the tool-post, a pair of tools mounted in the holder and movable laterally bination with a bed and tooLpost, mechanism for moving the same relatively to each other, a pair of standards connected to the bed and having vertical guideways, a profile bar guided in said ways and movable vertically, a tool-holder secured in the tool-post, and a tool mounted in the holder and movable lat erally therein and bearing against said pro= file bar.

4. In a metal-working machine,"the com= bination with a bed and tool-post, mechanism for moving the same relatively to each other, a tool-holder secured in the tool-post, a pair of tools mounted in the holder and movable laterally therein, standards secured to the bed and provided with vertical guideways, a profile bar bearing against said tools and mounted in said guideways so as to move vertically, and means for holding the tools against the profile bar.

5. An attachment for metal-Working machines, comprising a holder provided with a lateral opening in its lower end and having a gap in its lower edge intersecting said lateral openingand adapted to receive a profile bar, and a pair of tools having shanks at right angles thereto which are seated in said lateral opening in the holder with their inner ends projecting into the gap therein.

In testimony whereof I, the said LAWRENCE E. WARD, have hereunto set my hand.

LAWRENCE E. WARD.

Witnesses:

F. W. WINTERS, ROBERT C. TOTTEN. 

